1. Note the difference in systolic pressure value between when (a) the sound act

Question

1. Note the difference in systolic pressure value between when (a) the sound actually began, (b) was detected by the stethoscope transducer, and (c) was recorded, and the time when the observer first heard the sound and pressed the event marker keystroke. (Example: 141 mmHg – 135 mmHg = 6 mmHg.) What factors could account for this difference? Would the observed difference be the same if measured by another observer? Explain your answer.

2. Do both systolic and/or diastolic pressure change as your heart rate increases?

3. How does this change affect your pulse pressure?

4. Define the first and second sounds of Korotkoff. Which sound is used to approximate systolic pressure and which sound is used to approximate diastolic pressure?

Explanation / Answer

1.factor responsible for this difference are- mainly because of reaction time and error in time recordings

-difference is mainly occur due to human error because we cannot match the point when sound heard at first followed by transmission of signal to brain to visualise the marking on sphygnomanometer, this communication gap resposible for this kind of difference in bp values also some tim is taken by kortkoff sound to travel via stethoscope

SO its better to be more accurate with microphone heard sound at first then with the reading because microphone data was more fast and accurate.

the observed difference be the different for different individual because every individual have different way and speed of handling the sphygmomanometer as well as neuromuscular and visual response is different with little variations

2.systolic bp increases as the heart rate increase by increasing cardiac output

changes in the diastolic bp will be small increase with high HR

3. pulse pressure will be increases because their is very high increase in systolic bp but very minimum increase in diastolic bp leads to increases in pulse pressure.

4. 1st sound of kortokoff is heard when cuff pressure matches the pressure in artery, this sound is caused by tubulent vibration produced by blood flow at first and it is with approximation with the systolicBP

2nd korotkoff sound is produced when the pressure in the cuff will be dropped below the (pressure in artery) diastolic bp because in it their is no more occlusion of the artery by cuff so it will be in approximation wih the distolic pressure( pressure applied by filled blood on the wall of artery is diastolic pressure).

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